/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package a.gui.proguard.gui.splash;

/**
 * This VariableDouble varies linearly with respect to its Timing.
 *
 * @author Eric Lafortune
 */
public class LinearDouble implements VariableDouble {
    private final double fromValue;
    private final double toValue;
    private final Timing timing;

    /**
     * Creates a new LinearDouble.
     * 
     * @param fromValue the value that corresponds to a timing of 0.
     * @param toValue the value that corresponds to a timing of 1.
     * @param timing the applied timing.
     */
    public LinearDouble(double fromValue, double toValue, Timing timing) {
        this.fromValue = fromValue;
        this.toValue = toValue;
        this.timing = timing;
    }

    // Implementation for VariableDouble.

    public double getDouble(long time) {
        return fromValue + timing.getTiming(time) * (toValue - fromValue);
    }
}
